Mastic asphalt for flat roofs: testing for quality assurance
Information Paper 8/91
Document Status
Current
Supplement
Core Supplement
Series
Information Paper
Abstract
Failure of standard types of mastic asphalt laid over thermal insulation, such as in warm deck sandwich flat roof construction, has occurred during severe winter conditions. BRE research has shown that the performance of mastic asphalt, particularly at low temperature, can be significantly improved by the addition of small proportions of appropriate polymers. Parameters derived from a simple bending test carried out at -20°C have shown the performance of polymer-modified asphalt to be better than existing British Standard types. BRE's objective of developing a laboratory test method sensitive to the impairment in the quality of asphalt caused by prolonged heating during remelt has been achieved.
Author
Beech, J. C. and Saunders, G. K.
Subjects
- Coverings and surface finishes
- Waterproofing/damp proofing
- Asphalt coatings
Publisher History
BRE is a building science centre that generates new knowledge through research. This is used to create products, tools and standards that drive positive change across the built environment. BRE helps its government and private sector clients meet the significant environmental, social and economic challenges they face in delivering homes, buildings and communities. BRE is owned by the BRE Trust, a registered charity. The Trust uses the profits made by the BRE companies to fund research and education that advances knowledge of the built environment.
Information
NBS
NBS has produced specification systems and information products for construction industry professionals for more than 40 years. The National Building Specification is the recognised UK national standard and is used by over 5,000 organisations. NBS is part of RIBA Enterprises Ltd.
Accuris
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